- Tuesday, October 13: Marty, Doc, and Edna return to 1931. Upon return, Edna is arrested by Officer Danny Parker. Arthur McFly reveals "Trixie Trotter" is actually Sylvia Miskin, and Marty and Doc return to 1986. Edna bunks with Irving "Kid" Tannen. This creates Timeline 43, which begins at Doc and Marty's entry point on May 15, 1986.
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